Walter scott shipe



(No Model.)

W. S. SHIPE. UNITING THE HEADS T0 THE BODIE No. 508,351.

s 0F BOILERS, dw. Patented Nov. 7, 1893.

wAsmNaToN. u. c.

UNITED v STATES PATENT QFFICE.

WALTER SCOTT sri-IPE, or TORONTO, CANADA.

UNITING THE HEADS To THE BODIES OF BOILERS, sbo.,

SPECIFICATION forming part of Letters Patent No. 508,351, dated November'7, 1893.

Application led October 31, 1892l Serial No. 450.547. (Specimens.)

.T all whom it may concern,.-

Be it known that I, WALTER SCOTT SHIPE, a citizen of the United Statesof America, residing at Toronto, York county, Ontario, Canada,haveinvented certain new and useful Improvements in Uniting Heads toCylinders, &c., of which the following is a specification, referencebeing had therein to the accompanying drawings.

This improvement relates to uniting the heads of boilers, moreparticularly that class of boiler shown in my Patents Nos. 453,946 and473,167, but it may be applied to other vessels having closed ends.

The invention consists in the peculiar construction, arrangement andycombinationsy of parts hereinafter more particularly described and thendefinitely claimed.

In the accompanying drawings-Figure l showsa vertical section of part ofa boiler and its head, before being compressed. Fig. 2 shows a simiifarview with the head in place n andthe lower part of theflange of the headcompressed. j Fig. 3 shows a similar view to that in Fig. 2 of anotherWay of carrying out my invention.

Referring now to the details of the drawings by letter-A represents thebody of the boiler, the ends of which are corrugated circumferentiallyat a whereby a shoulder o. is formed and an inturned edge a.

The head B is preferably originally formed with a plain ange b as shownin Fig. 1, but is afterward closed in as shown in Figs. 2 and 3, makinga shoulder b.

In uniting the head to the body in the plan shown in Fig. 2, there isrst set around the body, immediately under the shoulder 01.', a packingring C preferably of lead, solder, or other soft metal, which should beof about the same external diameter as the external diameter of thecorrugation a. The head B is then heated so as to be capable of slippingover the shoulder d Yand packing C, and when slipped over is set into amachine which compresses the lower part of the iiange b until it assumesthe shape shown in Figs. 2 and 3, and while still hot the head is drawntoward the end of the body so as to bring the shoulder b in closecontact with the soft metal packing which Will then entirely ill thespace between the shoulders a and b', making a perfectly tight jointbetween the body and head. The boiler may be afterward galvanized ornot, as desired. If galvanized, the melted metal will run into the spacea: between the flange b and the inturned edge ot of the body, making adouble protection.

In the modified form of vmy invention shown in Fig. 3, the same mode iscarried out, except that there is no packing set below the shoulder a.and therefore the two shoulders d b are brought close together when thehead is drawn outward. In this form of my invention, to make a surejoint at all times, it is advisable that the boiler shall be galvanizedinside so as to till the space with the melted metal which will insure atight joint.

The adjacent surfaces of the Iiange and body may be roughened or cut asindicated in dotted lines in Fig. 3, thebetter to enable it to hold themelted metal, although I do not consider this essential to the successof my process.

By the above described construction, a very strong and tight joint ismade, for, as will readily be seen,the greater the pressure the tighterwill be the joint.

As no claim is here made to the machine for 8o compressing the flange b,it is unnecessary to describe it. Many different styles of machines areknown to mechanics that are capable of being used for this purpose, andeach manufacturer will probably select the one that suits his own ideasbest.

I am aware that ithas been proposed to set a head having a bead over abody having a corresponding bead, close down the outer bead upon theinner bead and then run solder into the groove above the joint thusformed,but I regard my invention as essentially different from this, forin that case there is no flange b, nor is the head drawn outwardly, ascovered by. my first claim. This drawing outwardly I regard 4as animportant feature, for when a packing of soft material is used as shownat C, the drawing outward compresses said packing and makes a tightjoint.` The deep flange b is also an important point, for it strengthensthe shoulder b. If there were no such flange there might be a tendencyto ICO cause the shoulder to open and allow the ring of packing to slipunder the shoulder.

What I claim as new is- 1. The combination with a boiler body hav- 5 inga projecting shoulder, of a head having an inwardly turned shoulder band fiange b Iitting the body beneath the shoulder thereon, said headbeing drawn outward until a tight joint is made between said shoulders,

ro substantially as described.

2. The new article of manufacture herein shown and described consistingof a vessel having a body with a projecting shoulder a', a head havingan inwardly turned shoulder WALTER SCOTT Sl-IIPE.

Witnesses:

ALEN. STEUART, D. OCONNELL.

